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sim/
sim/cockpit2/
sim/cockpit2/electrical/
sim/cockpit2/electrical/RAT_generator_volts
float in volts
v12.0.7+
air-driven generator voltage
sim/cockpit2/engine/
Engine cockpit datarefs
sim/cockpit2/engine/actuators/
Controls for each engine. All array(16) types were array(8) before XP12.
sim/cockpit2/engine/actuators/afterburner_enabled
int as a boolean
v9.0.0+
Afterburner enabled, on or off. Dimension is by engine.
sim/cockpit2/engine/actuators/auto_ignite_on
int as a boolean
v9.20.0+
Auto-igniter switch, 0 or 1. Auto-ignition. This switch turns on a continuous ignition source in the engine to automatically relight it if there is a flameout. Dimension is by engine.
sim/cockpit2/engine/actuators/backup_throttle_ratio
float as a ratio
v12.1.0+
Position of the MOR (manual override throttle) or fallback throttle lever from 0.0 (idle) to 1.0 (max). Dimension is by engine.
sim/cockpit2/engine/actuators/beta_ratio
float as a ratio
v10.50.0+
Throttle position of the handle as a ratio, 0.0 is minimum beta, 1.0 = maximum beta. Dimension is by engine.
sim/cockpit2/engine/actuators/carb_heat_ratio
float as a ratio
v9.0.0+
Carb-heat handle position, 0.0 (none) to 1.0 (full). Dimension is by engine.
sim/cockpit2/engine/actuators/clutch_engage[1]
float as a boolean
v10.0.0+
XP10: the on/off status of the clutch, either per engine or per prop, depending on voodoo, dim 8. XP11: there is only ONE clutch for the whole airplane.
sim/cockpit2/engine/actuators/clutch_ratio[1]
float as a ratio
v10.0.0+
XP10: the ratio of the clutch, either per engine or per prop, depending on voodoo, dim 8. XP11: there is only ONE clutch for the whole airplane.
sim/cockpit2/engine/actuators/cowl_flap_ratio[16]
float as a ratio
v9.0.0+
Cowl-flap handle position, 0.0 (none) to 1.0 (full open).
sim/cockpit2/engine/actuators/cyclic_aileron_deg
float in degrees
v9.0.0+
Lateral cyclic COMMAND, in degrees. Positive right cyclic. Dimension is by prop.
sim/cockpit2/engine/actuators/cyclic_elevator_deg
float in degrees
v9.0.0+
Longitudinal cyclic COMMAND, in degrees. Positive forwards cyclic. Dimension is by prop.
sim/cockpit2/engine/actuators/eng_master[16]
int as a boolean
v12.0.0+
Engine Master switch ON/OFF for engines that require the mode selector
sim/cockpit2/engine/actuators/eng_mode_selector
int in enum
v12.0.0+
0 = Norm, -1 = Crank, 1 = Ign/Start
sim/cockpit2/engine/actuators/EPR_target_bug[16]
float in percent
v11.30.0+
EPR bug (target for thrust reference), %
sim/cockpit2/engine/actuators/fadec_on
int as a boolean
v9.0.0+
Fadec, ok or off. Dimension is by engine.
sim/cockpit2/engine/actuators/fire_extinguisher_on
int as a boolean
v9.30.0+
Fire extinguisher on Dimension is by engine.
sim/cockpit2/engine/actuators/fuel_pump_on
int in enum
v9.0.0+
Fuel pump, on or off. This is the electric per-engine fuel pump! 0=off, 1=on (high), 2=auto (pressure-triggered) Dimension is by engine.
sim/cockpit2/engine/actuators/governor_on
int as a boolean
v9.30.0+
Governor on-off switch. Dimension is by engine.
sim/cockpit2/engine/actuators/hardware_throttle_ratio[16]
float as a ratio
v12.1.3+
Throttle position of the handle as a ratio with reverse and beta, -2..-1 = rev, -1..0=beta, 0..1=alpha, as coming from calibrated joystick axis with ranges
sim/cockpit2/engine/actuators/idle_speed[16]
int as a boolean
v9.0.0+
Idle speed, hi=1 or lo=0.
sim/cockpit2/engine/actuators/idle_speed_ratio[16]
float in [0..1]
v11.0.0+
Idle speed, hi=1 or lo=0 - continuous control
sim/cockpit2/engine/actuators/igniter_on
int as a boolean
v9.0.0+
Igniter, on or off. Dimension is by engine.
sim/cockpit2/engine/actuators/ignition_key[16]
int in enum
v9.55.0+
0 = off, 1 = left, 2 = right, 3 = both, 4 = starting. The dataref is spring-loaded for starter. You have to keep setting it to start in order to keep cranking.
sim/cockpit2/engine/actuators/ignition_on
int in enum
v9.0.0+
0 = off, 1 = left, 2 = right, 3 = both Dimension is by engine.
sim/cockpit2/engine/actuators/manual_feather_prop
float as a boolean
v11.0.0+
override and activate the feather, no matter what any auto-feather logic does. Dimension is by engine.
sim/cockpit2/engine/actuators/mixture_ratio
float as a ratio
v9.0.0+
Mixture handle position, 0.0 (cutoff) to 1.0 (full rich). Dimension is by engine.
sim/cockpit2/engine/actuators/mixture_ratio_all
float as a ratio
v9.30.0+
Mixture handle position, this controls all at once.
sim/cockpit2/engine/actuators/N1_target_bug[16]
float in percent
v11.30.0+
N1 bug (target for thrust reference), %
sim/cockpit2/engine/actuators/primer_on
int as a boolean
v9.0.0+
Primer button, on or off. Dimension is by engine.
sim/cockpit2/engine/actuators/primer_ratio
float as a ratio
v9.0.0+
Primer handle position, 0.0 (none) to 1.0 (on). Dimension is by engine.
sim/cockpit2/engine/actuators/prop_angle_degrees
float in degrees
v9.30.0+
Prop handle position, in degrees. Use this if your plane has a manual-adjust prop. Dimension is by prop.
sim/cockpit2/engine/actuators/prop_angle_degrees_all
float in degrees
v9.30.0+
Prop handle position, in degrees, set all at once.
sim/cockpit2/engine/actuators/prop_mode
int in enum
v9.0.0+
Propeller and engine operation mode. It is used for props and jets. Mode 0 is feathered, 1 is normal, 2 is in beta, and reverse (prop or jet) is mode 3. Dimension is by engine.
sim/cockpit2/engine/actuators/prop_pitch_deg
float in degrees
v9.0.0+
REQUESTED pitch of the prop in degrees from its flat-pitch setting. Dimension is by prop.
sim/cockpit2/engine/actuators/prop_ratio[16]
float as a ratio
v10.50.0+
Prop handle position, in ratio. NOTE: This is also used for helicopter collective!
sim/cockpit2/engine/actuators/prop_ratio_all
float as a ratio
v10.50.0+
Prop handle position, in ratio. This controls all handles at once. NOTE: This is also used for helicopter collective!
sim/cockpit2/engine/actuators/prop_rotation_speed_rad_sec
float in radians/second
v9.0.0+
Prop handle position, in radians per second of requested prop rpm. Use this if your plane has a constant speed prop. Dimension is by prop.
sim/cockpit2/engine/actuators/prop_rotation_speed_rad_sec_all
float in radians/second
v9.30.0+
Prop handle position, this controls all props at once.
sim/cockpit2/engine/actuators/starter_fuel_flow_ratio[16]
float in Ratio
v12.0.8+
Ratio of normal fuel flow allowed by starter procedure - 0 before starter button is pressed and 1.0 when startup sequence is complete. This applies to turbines and recip engines but not electric motors.
sim/cockpit2/engine/actuators/starter_hit[16]
int as a boolean
v11.0.0+
True while the starter motor is engaged
sim/cockpit2/engine/actuators/start_lock_engaged[16]
int as a boolean
v11.30.0+
Start lock to lock prop into fine pitch position so it doesn't feather on loss of oil pressure, for fixed turbofan engines.
sim/cockpit2/engine/actuators/throttle_beta_rev_ratio[16]
float as a ratio
v11.10.0+
Throttle position of the handle as a ratio with reverse and beta, -2..-1 = rev, -1..0=beta, 0..1=alpha
sim/cockpit2/engine/actuators/throttle_beta_rev_ratio_all
float as a ratio
v11.10.0+
Controls the throttle handle position, but includes beta and reverse. -2..-1 is reverse, -1..0 is beta, 0..1 is alpha.
sim/cockpit2/engine/actuators/throttle_jet_rev_ratio[16]
float as a ratio
v11.30.0+
Throttle position of the handle as a ratio with reverse, -1..0 = rev, 0..1=fwd
sim/cockpit2/engine/actuators/throttle_jet_rev_ratio_all
float as a ratio
v11.30.0+
Controls the throttle handle position, but includes reverse. -1..0 is reverse, 0..1 is fwd.
sim/cockpit2/engine/actuators/throttle_ratio
float as a ratio
v9.0.0+
Throttle position of the handle itself, from 0.0 (idle) to 1.0 (max normal). Dimension is by engine.
sim/cockpit2/engine/actuators/throttle_ratio_all
float as a ratio
v9.30.0+
Throttle position of the handle itself - this controls all the handles at once.
sim/cockpit2/engine/actuators/unfeather_pump_running[16]
int as a boolean
v11.30.0+
Manual unfeather pump can provide oil pressure to the governor, to unfeather a stopped prop when the startlocks weren't engaged. Running the pump first unfeathers the prop and then engages the startlock
sim/cockpit2/engine/indicators/
Readings for each engine
sim/cockpit2/engine/indicators/carburetor_temperature_C
float in degrees_C
v11.0.0+
Carburator temperature in degrees C Dimension is by engine.
sim/cockpit2/engine/indicators/CHT_CYL_deg_C[192]
float in degrees_C_or_F
v12.0.0+
CHT, deg. Dataref label is wrong, units vary by plane. Up to 12 cylinders Use CHT_CYL_deg_C_or_F Dimension is 192.
sim/cockpit2/engine/indicators/CHT_CYL_deg_cel[192]
float in degrees_C_or_F
v12.0.8+
CHT, deg. units vary by plane. Up to 12 cylinders Dimension is 192.
sim/cockpit2/engine/indicators/CHT_deg_C
float in degrees_C_or_F
v9.0.0+
CHT, deg. Dataref label is wrong, units vary by plane.- use CHT_deg_C_or_F Dimension is by engine.
sim/cockpit2/engine/indicators/CHT_deg_cel[16]
float in degrees_C
v12.0.8+
CHT, deg. ALWAYS CELCIUS
sim/cockpit2/engine/indicators/clutch_in_motion
int as a boolean
v12.1.0+
Clutch is in motion (in the process of engaging or disengaging) right now
sim/cockpit2/engine/indicators/EGT_CYL_deg_C[192]
float in degrees_C_or_F
v12.0.0+
EGT, deg. Dataref label is wrong, units vary by plane. Up to 12 cylinders - use EGT_CYL_deg_C_or_F Dimension is 192.
sim/cockpit2/engine/indicators/EGT_CYL_deg_cel[192]
float in degrees_C_or_F
v12.0.8+
EGT, deg. units vary by plane. Up to 12 cylinders Dimension is 192.
sim/cockpit2/engine/indicators/EGT_deg_C
float in degrees_C_or_F
v9.0.0+
EGT, deg. Dataref label is wrong, units vary by plane. - use EGT_deg_C_or_F Dimension is by engine.
sim/cockpit2/engine/indicators/EGT_deg_cel[16]
float in degrees_C_or_F
v12.0.8+
EGT, deg. units vary by plane.
sim/cockpit2/engine/indicators/engine_speed_rpm
float in revolutions/minute
v9.40.0+
Engine speed, revolutions per minute Dimension is by engine.
sim/cockpit2/engine/indicators/EPR_ratio
float as a ratio
v9.0.0+
EPR, ratio. Dimension is by engine.
sim/cockpit2/engine/indicators/fuel_flow_dry_kg_sec
float in kilograms/second
v11.40.0+
dry fuel flow, kilograms per second. Dimension is by engine.
sim/cockpit2/engine/indicators/fuel_flow_kg_sec
float in kilograms/second
v9.0.0+
total fuel flow, kilograms per second. Dimension is by engine.
sim/cockpit2/engine/indicators/fuel_pressure_psi
float in pounds/square_inch
v9.0.0+
Fuel pressure, psi. Dimension is by engine.
sim/cockpit2/engine/indicators/igniter_sparking
int as a boolean
v11.35.0+
Whether igniters are sparking, either because the pilot or system logic turned them on, power is available and they are not failed Dimension is by engine.
sim/cockpit2/engine/indicators/igniter_volt
float in volt
v11.35.0+
Voltage we have to charge the ignition, useful for sound effects Dimension is by engine.
sim/cockpit2/engine/indicators/inverter_temp_C[16]
float in degrees_C
v12.1.0+
electric engines: temperature of inverter (per engine)
sim/cockpit2/engine/indicators/ITT_deg_C
float in degrees_C_or_F
v9.0.0+
ITT, deg. Dataref label is wrong, units vary by plane. - use ITT_deg_C_or_F Dimension is by engine.
sim/cockpit2/engine/indicators/ITT_deg_cel[16]
float in degrees_C_or_F
v12.0.8+
ITT, deg. units vary by plane.
sim/cockpit2/engine/indicators/MPR_in_hg
float in inches_hg
v9.0.0+
Manifold pressure, inches HG. Dimension is by engine.
sim/cockpit2/engine/indicators/N1_fadec_arc[16]
float in percent
v12.1.0+
N1 arc (FADEC target from thrust lever. Only active on planes with FADEC!), %
sim/cockpit2/engine/indicators/N1_percent
float in percent
v9.0.0+
N1, %. Dimension is by engine.
sim/cockpit2/engine/indicators/N2_percent
float in percent
v9.0.0+
N2, %. Dimension is by engine.
sim/cockpit2/engine/indicators/oil_pressure_psi
float in pounds/square_inch
v9.0.0+
Oil pressure, psi. Dimension is by engine.
sim/cockpit2/engine/indicators/oil_quantity_ratio
float as a ratio
v9.0.0+
Oil quantity, 0.0 to 1.0. Dimension is by engine.
sim/cockpit2/engine/indicators/oil_temperature_deg_C
float in degrees_C_or_F
v9.0.0+
Oil temp, deg. Dataref label is wrong, units vary by plane. Dimension is by engine.
sim/cockpit2/engine/indicators/power_watts
float in watts
v9.0.0+
Actual engine power output. Dimension is by engine.
sim/cockpit2/engine/indicators/prop_speed_rpm
float in revolutions/minute
v9.40.0+
Prop speed, revolutions per minute Dimension is by prop.
sim/cockpit2/engine/indicators/prop_speed_rsc[16]
float in radians/second
v12.0.0+
Prop speed, Radians/second
sim/cockpit2/engine/indicators/stator_A_temp_C[16]
float in degrees_C
v12.1.0+
electric engines: temperature of stator A
sim/cockpit2/engine/indicators/stator_B_temp_C[16]
float in degrees_C
v12.1.0+
electric engines: temperature of stator B
sim/cockpit2/engine/indicators/thrust_dry_n
float in newtons
v11.40.0+
Dry engine thrust Dimension is by engine.
sim/cockpit2/engine/indicators/thrust_n
float in newtons
v9.30.0+
Total engine thrust Dimension is by engine.
sim/cockpit2/engine/indicators/torque_n_mtr
float in newton_meters
v9.0.0+
Torque, NM. Dimension is by engine.
sim/cockpit2/fuel/
Fuel system controls
sim/cockpit2/fuel/auto_crossfeed
int in enum
v11.35.0+
0=Off 1=Auto 2=On - If fuel pressure on one side is low, due to fuel pump failure for example, cross-feed is opened to allow one pump to supply pressure to both engines.
sim/cockpit2/fuel/firewall_closed_left
int as a boolean
v11.35.0+
Firewall valve closed, left
sim/cockpit2/fuel/firewall_closed_right
int as a boolean
v11.35.0+
Firewall valve closed, right
sim/cockpit2/fuel/fuel_crossfeed_selector
int in enum
v12.0.0+
0=none,1=from left tank,3=from right tank.
sim/cockpit2/fuel/fuel_gravity_crossflow
int as a boolean
v12.0.0+
0=closed, 1=open
sim/cockpit2/fuel/fuel_level_indicated_left
float in kg
v11.35.0+
Indicated fuel level left, shows total or only nacelle tanks depending if user is holding down the aux-tank button.
sim/cockpit2/fuel/fuel_level_indicated_right
float in kg
v11.35.0+
Indicated fuel level right, shows total or only nacelle tanks depending if user is holding down the aux-tank button.
sim/cockpit2/fuel/fuel_quantity[9]
float in kgs
v9.40.0+
Indicated fuel level per tank
sim/cockpit2/fuel/fuel_tank_pump_on[9]
int as a boolean
v9.30.0+
True if the pump for this tank is on.
sim/cockpit2/fuel/fuel_tank_selector
int in enum
v9.0.0+
0=none,1=left,2=center,3=right,4=all,5=aft
sim/cockpit2/fuel/fuel_tank_selector_left
int in enum
v9.20.0+
Left-engine fuel-tank selector.0=none,1=left,2=center,3=right,4=all,5=aft
sim/cockpit2/fuel/fuel_tank_selector_right
int in enum
v9.20.0+
Right-engine fuel-tank selector.0=none,1=left,2=center,3=right,4=all,5=aft
sim/cockpit2/fuel/fuel_tank_source_for_engine[16]
int in enum
v12.0.7+
Which tank excess heated fuel goes back into - this is NOT the fuel selector!
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